Damper



Jan, 2, 1923. I 1,443,107

A. C. MOTTl JR.

DAMPER. FILED DEC. l. i921.

2 SHEETS-SHEET l ma* l I EM i Patented dan. 2, i923.

ABRAIVI C. llfIO'lT, JR., OFPHTLADELPHIA, PENNSYLVANTA, ASS'IGNORTABRALL C if? t i lil l1 STOVE COLVIPANY, 0F PHTLADELFHIA,,PEJTNSYLVAINLH' CRPORiTTlF PENN-- i SYLVANIA.

neiarnr..

Application ledDecernber 1, i921. Serial No. @193505.

To all whom tf/mty concern.' l A Be it known that l, BRAM C. Motor, Jr.,a citizen of the United States, residing in Philadelphia, Pennsylvania,have invented certain Improvements inl)a1npers,ol2 which the followingis a specication.

The object of my invention is to construct Fig. 5 is an end view lookingin the di rection of the arrow, Fig. l; f

Fig. 6 is a sectional view on the line 6-6, Fig. l; x

Fig. 7 is a view Showing the damper secured toa vertical pipe or liue;

Fig. 8 is a view showing the damper secured to aehorizontal pipe orllue; and

Figs. 9 and 10 are views of modifications of the invention.

Referring to the drawings, l is the frame of the damper curved at theback to lit a flue of a given size and it has a llange 2 on all foursides. This flange has bolt or rivet holes by which it can be attachedto a vertical flue 3 or a horizontal flue Ll. The opening in the damperis rectangular in the present instance and the internal flanges 5 of theframe l extend on two sides, while the flanges 6 extend on the other twosides. The damper plate 7 has trunnions 8 at diametrically oppositecorners. These trunnions lit in recesses 9 in the frame l. The ends ofthe trunnions are rounded or tapered to fit corresponding sockets l0 kinbrackets 11, which are secured to perforated lugs l2 by bolts 13 so thatthe damper' plate is free to turn in the sockets. The plate 7 has aflange ll on all four sides, but the flange on two oi the sides isdeeper than it is on the other two sides, as shown in Figs. 2 and 3.This portion of the llange hears against the face ot the flanges 6 ofthe frame. On the other two sides of the plate is an outwardlyprojecting lipk l whichextends under the flange 5 or `the traine sothat, wheny the damper is closed,

thelip l5 rests-against the iiange 5, while the edge of the plate restsagainst the outer l' (I surraceor the flange 6. .f l

Bymaking the daml er plate with a ilange .deeper at one side thank atthek other, tha p portion of the plate having the deeper llangeoverbalances the other `portion in weight and tends to keep the damperin the closed position. ln some instances the damper plate may be madewithout iiange,in which case a weight 16 is provided on one side, asillustrated in Fig. 9.

17 is an arm projecting from the bracket. This arm is perforated toreceive a chain,

or rod, by which thedamper is operated and `held in any positiondesired.

Vl/vhile the damper is illustrated as applied to a flue, or smoke pipe,it will be understood that the damper may be. applied to any portion ofa furnace where 'the ordinary damper is used.y l

y my invention the number oit sizes of damper parts necessary to bevcarried in` stock can be materially reduced. A damper made in accordancewith my invention can be used without alterations on a vertical line orpipe or on a horizontal line or pipe. It can also be applied to a pipearranged at any angle.

ln F ig. l0 ll have shown circular damper 7n adapted to a similaropening in a frame la, the pivot of the damper being located, at'diametrical corners or the traine as in Fig. l.

Tn some instances the pipe or casing having the opening therein for thedamper may forni part of the frame, 'the bearings being attacheddirectly to the pipe or casing.

I claim:

l. The combination in a damper or a frame; and a damper plate pivoted tothe trame at `diametrically opposite corners ol:

vthe trarne, the plate being 'weighted on one plate flO frame adapted tobe secured to a. pipe or other structure, Said :traine having arectangular opening therein; and a rectangular plate adapted to eloeethe opening and pivoted to the iframe at diainetrieally oppositecorners, the damper plate being Weighted on one side so as to normallyvclose the plate againstthe frame.

4. The combination in a damper of a anie shaped to t a pipe, the framehaving a rectangular opening therein adapted to communicate With theinterior of the pipe; and a plate arranged to close the opening andhaving pivots at diametrioally opposite corners, the plate being hanged,said lange being deeper on one side than on the other so that the deepside acts as a Weight to keep the damper plate closed against the frame.

5. The combination in a damper of a frame having a securing flange, saidframe having a rectangular opening therein; a damper plate closing theopening and having trunnions at diametrically opposite corners; andsockets on the Jframe for the trunnions, the plate being langed on allfour side and having a pro3eeting lip on two sides, the frame having aninwardly projeeting flange on two sides with which the 11p comes incontaot,tne plate being Weighted on the other side, said Weight tendingto `keep the damper plate in the Closed posi-

